2989. It may also be known that such forms do not exist in the mind as are exhibited in the expression, but that they are merely affections which are thus effigied; also that such acts do not exist in the mind as are exhibited by the acts of the body, but that it is thoughts which are thus figured. The things which are of the mind are spiritual, but those of the body are natural. From this it is evident that there exists a correspondence between spiritual things and natural things, and that there is a representation of spiritual things in natural things; or what is the same, when the things of the internal man are effigied in the external man, then the things that appear in the external man are representative of the internal man; and the things that agree are correspondences.